This is a calculator supporting variable.
It can run iPhone OS 3.0 too.
Example
expand polynomial
(2a+b)(3c+d) = 6ac + 2ad + 3bc + bd
expand sin/cos
sin(a+b) = sin(a)cos(b) + cos(a)sin(b)
calculate fraction
1/2 + 1/3 = 5/6
This is a calculator supporting variable.
It can run iPhone OS 3.0 too.
Example
expand polynomial
(2a+b)(3c+d) = 6ac + 2ad + 3bc + bd
expand sin/cos
sin(a+b) = sin(a)cos(b) + cos(a)sin(b)
calculate fraction
1/2 + 1/3 = 5/6